"There is a mystical
virtue in right angles. There is an unspoken morality in seeking the level and the
plumb. A house will stand, a table will bear weight, the sides of a box will hold
together only if the joints are square and the members upright. When the bubble is
lined up between two marks etched in the glass tube of the level, you have aligned
yourself with the forces that hold the universe
together."
Scott Russell Sanders